Android Open Source - Music2SD Music2 S D Patch

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License

The source code is released under:

Copyright (c) 2014, Lepidus Development LLC All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions ...

Java Source Code

package com.lepidusdevelopment.music2sd;
//from  w ww  . j av  a  2  s . c o m
/**
 * Copyright (c) 2014, Lepidus Development LLC
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 *   Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * 
 *   Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.File;
import java.util.UUID;

import android.content.Context;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.IXposedHookZygoteInit;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XC_MethodReplacement;
import de.robv.android.xposed.XSharedPreferences;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;

public class Music2SDPatch implements IXposedHookZygoteInit, IXposedHookLoadPackage {
  public static final String PACKAGE_NAME = Music2SDPatch.class.getPackage().getName();
  public static final String TAG = "Music2SDPatch";
  private static XSharedPreferences prefs;
  
  @Override
    public void initZygote(StartupParam startupParam) throws Throwable {
    prefs = new XSharedPreferences(PACKAGE_NAME);
  }
  
  @Override
  public void handleLoadPackage(LoadPackageParam lpparam) throws Throwable {
    if (lpparam.packageName.equals("com.google.android.music") && android.os.Build.VERSION.SDK_INT < 19) {
      ClassLoader classLoader = lpparam.classLoader;
      
        // Move all of our directories to the new location.
      XC_MethodReplacement CacheUtils_getCacheDirectory = new XC_MethodReplacement() {
        @Override
        protected Object replaceHookedMethod(MethodHookParam param) throws Throwable {
          Context paramContext = ((Context) param.args[0]);
          String paramString = ((String) param.args[1]);
          return getSDCardPath(paramContext, paramString);
//          File debugFile = getSDCardPath(paramContext, paramString);
//          XposedBridge.log("CacheUtils_getCacheDirectory: " + debugFile.getAbsolutePath());
//          
//          return debugFile;
        }
        };
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getInternalCacheDirectory", Context.class, String.class, CacheUtils_getCacheDirectory);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getInternalCacheDirectory_Old", Context.class, String.class, CacheUtils_getCacheDirectory);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getExternalCacheDirectory", Context.class, String.class, CacheUtils_getCacheDirectory);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getExternalCacheDirectory_Old", Context.class, String.class, CacheUtils_getCacheDirectory);
        
        
        // Weird methods that may or may not be using the above methods. Best to play it safe and overwrite it.
        XC_MethodReplacement CacheUtils_musicCacheDirectory = new XC_MethodReplacement() {
        @Override
        protected Object replaceHookedMethod(MethodHookParam param) throws Throwable {
          Context paramContext = ((Context) param.args[0]);
          return getSDCardPath(paramContext, "music");
//          File debugFile = getSDCardPath(paramContext, "music");
//          XposedBridge.log("CacheUtils_musicCacheDirectory: " + debugFile.getAbsolutePath());
//          
//          return debugFile;
        }
        };
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getMusicCacheDirectoryById", Context.class, UUID.class, CacheUtils_musicCacheDirectory);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getSelectedVolumeMusicCacheDirectory", Context.class, CacheUtils_musicCacheDirectory);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "resolveMusicPath", Context.class, String.class, int.class, UUID.class, CacheUtils_musicCacheDirectory);
        
        
        // Forces External Storage type.
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheLocationManager", classLoader, "deviceHasExternalStorage", XC_MethodReplacement.returnConstant(true));
        Class<?> storageTypeClass = XposedHelpers.findClass("com.google.android.music.download.cache.CacheUtils.StorageType", classLoader);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "getSchemaValueForStorageType", storageTypeClass, XC_MethodReplacement.returnConstant(2));
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "isExternalStorageMounted",  XC_MethodReplacement.returnConstant(true));
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheUtils", classLoader, "isVolumeMounted", UUID.class, Context.class,  XC_MethodReplacement.returnConstant(true));
                
        
        // Modify any cache locations that may slip through.
        XC_MethodHook CacheLocation_getFile = new XC_MethodHook() {
        @Override
        protected void afterHookedMethod(MethodHookParam param) throws Throwable {
          File oldPath = (File) param.getResult();
          File newPath = null;
          String oldPathString = oldPath.getAbsolutePath();
          String newPathString = prefs.getString("path", "");
          
          if (!newPathString.isEmpty()) {
            newPath = new File(newPathString);
            
            if (newPath.exists() && oldPathString.indexOf(newPathString) == -1) {
              int pos = oldPathString.indexOf("/Android/data/com.google.android.music/files") + 44;

              if (pos != oldPathString.length()) {
                String revisedPathString = newPathString + oldPathString.substring(pos);
                newPath = new File(revisedPathString);
              }
              
//              XposedBridge.log("CacheLocation_getFile: newPath - " + newPath.getAbsolutePath());
              param.setResult(newPath);
              return;
            }
          }
          
//          XposedBridge.log("CacheLocation_getFile: oldPath - " + oldPath.getAbsolutePath());
          param.setResult(oldPath);
          return;
        }
        };
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheLocation", lpparam.classLoader, "getCacheFile", String.class, CacheLocation_getFile);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheLocation", lpparam.classLoader, "getPath", CacheLocation_getFile);
        XposedHelpers.findAndHookMethod("com.google.android.music.download.cache.CacheLocation", lpparam.classLoader, "hasMusicFiles", XC_MethodReplacement.returnConstant(true));  
    }
  }
  
  private File getSDCardPath(Context paramContext, String paramString) {
    File path = null;
    String pathString = prefs.getString("path", "");
    
    // If path is empty then use Internal Storage.
    if (!pathString.isEmpty()) {
      path = new File(pathString);
      
      if (path.exists()) {
        if (paramString != null)
          path = new File(pathString, paramString);
        
        return path;
      }
    }

    path = paramContext.getFilesDir();
    
    // If for some reason that fails then panic!
    if (path != null) {
      if (paramString != null)
        path = new File(path, paramString);

      return path;
    }
    
    return null;
  }  
}

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